CVE-2026-28819
Received Received - Intake
Out-of-Bounds Write in Apple iOS and macOS

Publication date: 2026-05-11

Last updated on: 2026-05-11

Assigner: Apple Inc.

Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. An app may be able to execute arbitrary code with kernel privileges.
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Meta Information
Published
2026-05-11
Last Modified
2026-05-11
Generated
2026-06-21
AI Q&A
2026-05-12
EPSS Evaluated
2026-06-20
NVD
CVE-2026-28819
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
apple ios 18.7.9
apple ipados 18.7.9
apple macos_sequoia 15.7.7
apple macos_sonoma 14.8.7
apple macos_tahoe 26.5
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is an out-of-bounds write issue that was addressed by improving bounds checking in affected Apple operating systems. An out-of-bounds write occurs when a program writes data outside the boundaries of allocated memory, which can lead to unexpected behavior or security issues.

In this case, the vulnerability could allow an application to execute arbitrary code with kernel privileges, meaning the app could potentially gain the highest level of control over the system.

Impact Analysis

If exploited, this vulnerability could allow a malicious app to run arbitrary code with kernel-level privileges on affected Apple devices. This means an attacker could potentially take full control of the device, bypass security mechanisms, access sensitive data, or install persistent malware.

Mitigation Strategies

To mitigate this vulnerability, update your Apple devices to the fixed versions: iOS 18.7.9, iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, or macOS Tahoe 26.5.

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